Theo Fawcett’s DPhil dissertation, “Crisis of Compromise,” reimagines the defining political issues of the United States between 1840 and 1860 - territorial expansion, immigration, sectional nationalisms, party mobilisation, and attitudes toward political compromise and violence – in generational terms. Treating generations as both an analytical category and a lived reality, it examines how generations shaped United State politics and political culture both int terms of competing generational identities, through inter-generational politics, and through competing conceptions of inter-generational responsibility. In doing so, it establishes a novel analytical framework for examining party mobilisation, intra-party conflict and factionalism, Northern and Southern sectionalism, and transfers of power between political generations. Theo’s examiners, Dr Stephen Tuffnell and Professor Liz Varon (University of Virginia and a former Harmsworth Professor) praised a “deeply researched, insightful, well-crafted dissertation” and passed it with no corrections. Theo was an active Postgraduate Member of the RAI, an engaged participant in seminars and an ever-cheerful presence in our kitchen and common room. His supervisor, Professor Adam Smith, commented “Theo Fawcett is one of the most talented historians of politics I have supervised in my career. His meticulous research, which included sophisticated quantitative as well as quantitative analysis, was matched by a deep appreciation of the sensibilities of the people of the past whose lives he was studying.”